devZoGok/vb01
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only loading one's model data to the GPU once

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devZoGok
2025-06-15 18:41:52 +03:00
parent 6f7702cb19
commit 08907567b0
8 changed files with 150 additions and 125 deletions
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mesh.cpp
+11 -55
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@@ -30,51 +30,7 @@ namespace vb01{
for(Mesh *m : meshes)
delete m;
if(material)
delete material;
glDeleteVertexArrays(1, &VAO);
glDeleteBuffers(1, &EBO);
glDeleteBuffers(1, &VBO);
}
//TODO allow to init meshes to be drawn statically or dynamically
void Mesh::construct(){
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
u32 size = sizeof(MeshData::GpuVertex);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
MeshData::GpuVertex *glVertData = meshBase.toGpuVerts();
glBufferData(GL_ARRAY_BUFFER, 3 * meshBase.numTris * size, glVertData, GL_DYNAMIC_DRAW);
delete glVertData;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, 3 * meshBase.numTris * sizeof(u32), meshBase.indices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, size, (void*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, norm)));
glEnableVertexAttribArray(1);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, uv)));
glEnableVertexAttribArray(2);
glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, tan)));
glEnableVertexAttribArray(3);
glVertexAttribPointer(4, 3, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, biTan)));
glEnableVertexAttribArray(4);
glVertexAttribPointer(5, 4, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, weights)));
glEnableVertexAttribArray(5);
glVertexAttribPointer(6, 4, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, boneIndices)));
glEnableVertexAttribArray(6);
for(int i = 0; i < meshBase.numShapeKeys; i++){
glVertexAttribPointer(7 + i, 3, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, shapeKeyOffsets) + 3 * i * sizeof(float)));
glEnableVertexAttribArray(7 + i);
}
if(material) delete material;
}
void Mesh::initFramebuffer(u32 &framebuffer, u32 &renderbuffer, int width){
@@ -94,7 +50,7 @@ namespace vb01{
}
void Mesh::updateVerts(MeshData meshData){
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBindBuffer(GL_ARRAY_BUFFER, meshData.VBO);
MeshData::GpuVertex *glVertData = meshBase.toGpuVerts();
glBufferSubData(GL_ARRAY_BUFFER, 0, 3 * sizeof(MeshData::GpuVertex) * meshBase.numTris, glVertData);
@@ -130,8 +86,15 @@ namespace vb01{
float fov = cam->getFov(), width = root->getWidth(), height = root->getHeight(), nearPlane = cam->getNearPlane(), farPlane = cam->getFarPlane();
mat4 proj = perspective(radians(fov), width / height, nearPlane, farPlane);
material->update();
Shader *shader = material->getShader();
material->update();
shader->setBool(castShadow, "castShadow");
shader->setBool(skeleton, "animated");
shader->setMat4(view, "view");
shader->setMat4(proj, "proj");
shader->setVec3(camPos, "camPos");
shader->setMat4(model, "model");
if(skeleton)
updateSkeleton(shader);
@@ -142,13 +105,6 @@ namespace vb01{
if(reflect)
updateReflection(pos);
shader->setBool(castShadow, "castShadow");
shader->setBool(skeleton, "animated");
shader->setMat4(view, "view");
shader->setMat4(proj, "proj");
shader->setVec3(camPos, "camPos");
shader->setMat4(model, "model");
if(shader->getName() == "gui"){
shader->setVec2(Vector2((float)width, (float)height), "screen");
@@ -401,7 +357,7 @@ namespace vb01{
}
void Mesh::render(){
glBindVertexArray(VAO);
glBindVertexArray(meshBase.VAO);
glPolygonMode(GL_FRONT_AND_BACK, wireframe ? GL_LINE : GL_FILL);
glDrawElements(GL_TRIANGLES, 3 * meshBase.numTris, GL_UNSIGNED_INT, 0);
}